Galvanic Corrosion
Galvanic corrosion forms when 2 different metallic materials are combined within the same component. This can lead to an anode/cathode reaction, and accelerated corrosion of the less noble material. The latter may then suffer a corrosion rate far higher than that to be expected without any contact with the nobler partner material.
Especially for constructions where strength is a factor, it is important to take this phenomenon into account. The best way to avoid problems is to isolate both materials.
The documentation in attachment provides further information on the subject.
Source: euro-inox.org
